/*
 * Copyright (c) 2007 Aleksey Nikiforov
 * All rights reserved.
 *
 * Redistribution and use in source and binary forms, with or without
 * modification, are permitted provided that the following conditions are
 * met:
 *
 * * Redistributions of source code must retain the above copyright
 *   notice, this list of conditions and the following disclaimer.
 *
 * * Redistributions in binary form must reproduce the above copyright
 *   notice, this list of conditions and the following disclaimer in the
 *   documentation and/or other materials provided with the distribution.
 *
 * * Neither the name of 'Aleksey Nikiforov' nor the names of other contributors 
 *   may be used to endorse or promote products derived from this software 
 *   without specific prior written permission.
 *
 * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
 * "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED
 * TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
 * PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT OWNER OR
 * CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL,
 * EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO,
 * PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR
 * PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF
 * LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING
 * NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS
 * SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
 */

package org.lex.input.effects.component;

import org.lex.input.effects.MinMaxCurrent;



public class LoopedSpringModel implements SpringModel {

	private MinMaxCurrent restPoint;
	private MinMaxCurrent displacedPoint;
	
	private SpringComponent spring;
	
	public LoopedSpringModel(SpringConfig config, float min, float max) {
		spring = SpringComponent.getForConfig(config);
		restPoint = new MinMaxCurrent(min, max, 0, true);
		displacedPoint = new MinMaxCurrent(min, max, 0, true);
	}
	
	public void displace(float distance) {
		displacedPoint.addToCurrent(distance);
	}
	
	public float getDisplacement() {
		return restPoint.findDeltaNoVerify(displacedPoint.getCurrent());
	}
	
	public void setDisplacement(float displacement) {
		displacedPoint.setCurrent(restPoint.getCurrent() + displacement);
	}
	
	public void stop() {
		displacedPoint.setCurrent(restPoint.getCurrent());
		spring.stop();
	}
	
	public float getDisplacedPoint() {
		return displacedPoint.getCurrent();
	}

	public void setDisplacedPoint(float displacedPoint) {
		this.displacedPoint.setCurrent(displacedPoint);
	}

	public float getRestPoint() {
		return restPoint.getCurrent();
	}

	public void setRestPoint(float restPoint) {
		this.restPoint.setCurrent(restPoint);
	}

	public void update(float deltaT) {
		spring.setDisplacement(
				restPoint.findDeltaNoVerify(displacedPoint.getCurrent()));
		spring.update(deltaT);
		displacedPoint.setCurrent(
				restPoint.getCurrent() + spring.getDisplacement());
	}

	public float getTravelVector() {
		return spring.getTravelVector();
	}
	
}